I'm absolutely sure, because once I restarted my last level of progression, on an otherwise lagy, stuttering, rainy tropical night in the jungle, where the framerates would go below the mid-thirties, and at some points stutter so much that my mouse (cursor/aim) would be out of sync, it now runs a bit more (noticeable more) smoothly on the very same settings. I'm happy to say that these drivers are worth the extra bandwidth and risks, or maybe my client finally auto-updated itself, who knows.